of birmingham



` of harness-operating mechanism; and,

' of the same,

A. w. suivis,

OF BIRMINGHAM, IOWA, ASSIGNOR TO HIMSELF A ND SAMUEL B. SI-IOTT,v OFSAME PLACE.

Letters Patent Noi 83,557,dated October 27, 1868.

IIPROVENIENT 1N' LOOM.

*we* u The Schedule referred to :ln these Lettera Patent making part oftha'nm To all whom tt may comer/n: i

Be it known that I, A. W. Suivis, of Birmingham, in the county of VanBuren, and State of Iowa, have invented a new and useful Improvement inLooms; and I do hereby declare that the following is a full,

. clear,'and exact description thereof, which will enable those skilledin the art to make and use the same, reference being had to theaccompanying drawings, forming part of .l this specification.

The nat'ure `of my invention relates to improvements in hand orpower-looms for' weaving cloth.

And it consists, first, in an improved automatic picker-motion; second,in an improved arrangement third, in the combination Vof theright-angled harness-levers with the harness-frames andpattern-cylinder.

On reference to the accompanying drawings- Figure 1 represents a sideelevation of my improved loom, with apart broken away, showing asectional view of the picker.

Figure 2 represents an elevation of the opposite side with a partbroken'away, showing-a section through the harness-frames.

Figure 3 is afront elevation, with apart broken away, showing thepicker-staff and its operative-mechanism, and a sectional view of theharnessemechanis'm.

Similar letters refer'to corresponding parts in all the figures.

' A representsthe framing;

B, the driving-shaft; C, the lay; and

D, a cross-bar, supported on the swords -of the lay,

towhich the picker-staff a is pivoted at b.

The lower end of the said picker-stati" is considerably enlarged, andisprbvided with the notches a? a2, into which the spring-hooks@3 a3 arealternately caused to catch, to vibiate thesta" to and fro.

a is a swinging pawl, pivoted to the staff, and having also an enlargedlower end, provided on each edge with double inclined planes, thesalient angles of the said double inclines being on a line with the axisof vibration of the picker-sta v Within the enlargedfend of .the pawl ais a cavity or space, to allow it to vibrate without being obstructed bythe axial pinof the picker-stati.

a5 represents a cap or bridge, connected to the crossbeam D, byright-angled projections, by which the' pawl a* and spring-catches arekept in contact with the said beam, as it swings back and forth.

The' 'springlcatches are hinged to a' stationary cross piece of theframe, at their lower ends, .and are also connected together by a spiralspring, a, which has a constant tendency to draw them together.

As the lay is pivoted at a position not in line with the pivot ofthespring-hooks, when it swings backward, the upper ends of the hooks willhave a movement,

on that side, before the same angle on the other side is passed by thathook.

The result of this will be that the pawl will be swung in the directionof its lowest side,

The 1point of the other hook having passed the salient angle on thelower side of the pawl, is now riding 'down the upper incline on thatside, or is borne entirely away from the pawl on'that side, by theincline on the pickerstaff', and consequently has less pressure on thepawl, so that when the hook` on the high side of the pawl rises as faras the notch in that side of the picker-staff, it will fall into it, andas soon as the lay begins its backward motion, the strain of the hookon'the catch in the picker-stai?, due to the resistance of thesameinbeing started into motion, and throwing the shuttle, will besogreat as to entirely overcome any tendency of the other hook to fallinto its notch; the salient angle of the pawl beingvhigh enough for thathook to rise over its catch in the picker-staff, the pawl being held inthat position by the aforementioned resistance of the hook, which hascaught into the notch on the high side.

Therefore, when the lay swings back, the picker-staff will be vibratedin one direction, andon the next backward movement of the lay, the sameaction takes place on the opposite side of the picker-stan" and pawl,and is so continued indefinitely.

b",represents a pawl, jointed to a bracket, b, securedf to one end ofthe lay, which communicates motion to the pattern-wheel b2.

b3 is a catch-pawl, which is lifted up, to,be disengaged from thenotched wheel on the pattern-cylinders, by ithe pawl b, and let fall bythe same, at the proper `time to arrest the motion of the cylinder, byfalling into the notched wheel.

b5 are right-angled harness-levers, suspended on an. axis, at b, foroperating ,the harness-frames, by the action of the tappets ofthe'pattern-wheel on theends of the vertical arms of the said levers,the harness-frames being suspended 'om the longer horizontal arms, g

l a is aT-shaped lever, working loosely on the axis of the take-uproller, on the longer arm of which is suspended a weight, tlf.

' as is a rod, connecting the with the lay, which moves forward, thespring-fingers as in iig. 3, the salient angle of the' by the pressureofv the hook, which has not yet passed the salient angle.

- wound up, but if it he so great as lto resist the action ofthe weight,then the roller will not be turned, but will'remain at rest until thetension becomes 'less The tension on the yarn-beam is eiected by theWeighted arm e, and cord on the grooved pulley e.

Having thus fully described rny invention, What I claim, and Patent, is-

desire to secure by Letters l 1. The arrangement of the pickevstai a,with its enlarged lower end notched at a", the swinging reversing-paw'vla, provided at its enlarged lower end with double inclines, the hingedspring-hooks a3, and the bridge a, all operating as described for thepurpose specied.

2. The arrangement of the pawl b", bracket b, secured to the lay, thepattern-cylinder b2, catch-paw] b3, and pivoted right-angularharness-levers b", all constructed as herein described, for the purposespecified.

3. The combination of the right-angled harnesslevers b? with theharness-frames and pattern-cylinder, substantially as and for thepurpose set forth.

A. W. SILVIS.

Witnesses:

H. ULAY CLINTON, GEO. C. REED.

